A couple suggestions. First, there is a newer update, which is 2018.0.5. (Build 3904) from 10/04/18. Go to Help, the Check for Updates. See if the update will resolve the issue. If not open the recorder, click on Tools, and make sure on the General Tab, under Capture, make sure all three selections are checked. I think that should resolve the issue. If not, then I would suggest putting in a support ticket to TechSmith. They may be able to help you further investigate the issue.

Yes that is correct. It looks like you have everything checked that needs to be checked. I believe someone posted that there are some in Europe reporting issues about getting to the TechSmith site. If the clearing of the browser does not work, then I would suggest your reaching out directly to TechSmith.

Hard for you to do, if you can't get to the site! Here is the information from the English site. I couldn't find a support page for German language.